<template>
  <div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader :receive="addTodo"></MyHeader>
        <List :cars="todos" :changeCheck="changeCheck" :deleteTodo="deleteTodo"></List>
        <MyFooter :cars="todos" :checkAll="checkAllTodo" :clearAll="clearAllTodo"></MyFooter>
      </div>
    </div>
  </div>
</template>

<script>
    import MyHeader from './components/MyHeader.vue'
    import MyFooter from './components/MyFooter.vue'
    import List from './components/List.vue'
    export default {
        name: 'App',
        methods:{ 
          //添加一个todo
          addTodo(x){
            console.log('App组件接收的数据:',x)
            this.todos.unshift(x)
          },
          //切换选中状态
          changeCheck(id){
            this.todos.forEach((todo)=>{
                if(todo.id === id) todo.done = !todo.done
            })
          },
          //删除一个todo
          deleteTodo(id){
            if(confirm('确定要删除吗？')){
              this.todos = this.todos.filter(todo => todo.id !== id)
            }
          },
          //全选or全不选
          checkAllTodo(done){
            // console.log(done)
            this.todos.forEach((ele,index)=>{
                ele.done = done
            })
          },
          clearAllTodo(){
            this.todos = this.todos.filter((todo)=>{
              return !todo.done
            })
          }
        },
        components: {MyHeader, MyFooter, List },
        data(){
          return {
            todos:[
              {id:'001', title:'汉DMi', done:true},
              {id:'002', title:'极氪001', done:false},
              {id:'003', title:'理想L9', done:false},
            ]
          }
        },
        watch:{
          todos:{
            deep:true,
            handler(value){
              console.log('@@@',value)
              localStorage.setItem('todos',JSON.stringify(value))
            }
          }
        }
    }
</script>
<style>
  /*base*/
  body {
    background: #fff;
  }
  .btn {
    display: inline-block;
    padding: 4px 12px;
    margin-bottom: 0;
    font-size: 14px;
    line-height: 20px;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
    border-radius: 4px;
  }
  .btn-danger {
    color: #fff;
    background-color: #da4f49;
    border: 1px solid #bd362f;
  }
  .btn-danger:hover {
    color: #fff;
    background-color: #bd362f;
  }
  .btn:focus {
    outline: none;
  }
  .todo-container {
    width: 600px;
    margin: 0 auto;
  }
  .todo-container .todo-wrap {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
  }
</style>
